2011 Fiscal Year Final Research Report
Investigation on the effect of various factors on the rate of corrosion of reinforcing bar in concrete and estimation of the life of RC buildings
| Project/Area Number |
21560579
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Building structures/materials
|
|---|
| Research Institution | Utsunomiya University |
|---|
Principal Investigator |
|
|---|
| Project Period (FY) |
2009 – 2011
|
| Keywords | 腐食速度 / 質量減少 / 塩分量 / 水セメント比 / かぶり厚さ |
|---|
| Research Abstract |
The long term outdoor exposure test on the rate of corrosion of reinforcing bar in concrete which contains chloride ion. The factor of experiment are sodium chloride content(0～1.0%/sand), water-cement ratio(50～65%), and thickness of concrete cover(15～40mm). It is conclude as follows. The corrosion loss of reinforcing bar in long term outdoor exposure test increases in proportion to square root of exposure period. Rate of corrosion of reinforcing bar decrease with increasing thickness of concrete cover in sodium chloride content(0～0.3%/sand). The estimation equation of the rate of corrosion of sodium chloride content are proposed by thickness of concrete cover and water cement ratio.
|
